number of errors=0
number of warnings=0
country=ES
Group=chkGrpPostalCode
select distinct admincode1,admincode2,adminname2 from zip_code where countrycode in ('ES') and admincode1 || admincode2 in (select admincode1 || admincode2 from (select distinct admincode1,admincode2,adminname2 from zip_code where countrycode in ('ES')) t group by admincode1,admincode2 having count(*)>1) order by admincode1,admincode2
http://www.correos.es/comun/CodigosPostales/1010_s-CodPostal.asp
admincode1 admincode2 adminname2